#-*- coding = utf-8 -*-
#@Time : 21-1-28 下午4:04
#@Author : wei
#@File : spider.py
#@Software: PyCharm


from bs4 import BeautifulSoup
import urllib.request,urllib.error
import re
import xlwt

def main():
    baseurl = 'https://movie.douban.com/top250?start='
    datalist = getData(baseurl)
    savepath = ".//豆瓣Top250.xls"
    saveData(datalist,savepath)


findLink = re.compile(r'<a href="(.*?)">')
findImgSrc = re.compile(r'<img.*src="(.*?)"',re.S)
findTitle = re.compile(r'<span class="title">(.*)</span>')
findRating = re.compile(r'<span class="rating_num" property="v:average">(.*?)</span>')
findJudge = re.compile(r'<span>(\d*)人评价</span>')
findInq = re.compile(r'<span class="inq">(.*?)</span>')
findBd = re.compile(r'<p class="">(.*?)</p>',re.S)

#爬取网页
def getData(baseurl):
    datalist = []
    for i in range(0,10):
        url = baseurl + str(i*25)
        html = askURL(url)
        soup = BeautifulSoup(html,"html.parser")
        for item in soup.find_all('div',class_='item'):
            data = []
            item = str(item)
            # print(item)
            # break
            link = re.findall(findLink,item)[0]
            data.append(link)
            imgSrc = re.findall(findImgSrc,item)[0]
            data.append(imgSrc)
            titles = re.findall(findTitle,item)
            if len(titles) == 2:
                ctitle = titles[0]
                data.append(ctitle)
                otitle = titles[1].replace('/','')
                data.append(otitle)
            else:
                data.append(titles[0])
                data.append(' ')

            rating = re.findall(findRating,item)[0]
            data.append(rating)
            judgeNum = re.findall(findJudge,item)[0]
            data.append(judgeNum)
            inq = re.findall(findInq,item)
            if len(inq) != 0:
                inq = inq[0].replace('。','')
                data.append(inq)
            else:
                data.append(' ')
            bd = re.findall(findBd,item)[0]
            bd = re.sub('<br(\s+)?>(\s+)?','',bd)
            bd = re.sub('</br(\s+)?>(\s+)?', '', bd)
            #bd = re.sub('/',' ',bd)
            data.append(bd.strip())
            datalist.append(data)
    #print(datalist)
    return datalist

#得到指定一个URL的网页内容
def askURL(url):

    head = {
        "User-Agent": "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:70.0) Gecko/20100101 Firefox/70.0"
    }
    request = urllib.request.Request(url,headers=head)
    html = ''
    try:
        response = urllib.request.urlopen(request)
        html = response.read().decode('utf-8')
    except urllib.error.URLError as e:
        if hasattr(e,"code"):
            print(e.code)
        if hasattr(e,"reason"):
            print(e.reason)

    return html

#保存数据
def saveData(datalist,savepath):
    print('save...')


    book = xlwt.Workbook(encoding="utf-8",style_compression=0)
    sheet = book.add_sheet('豆瓣电影250',cell_overwrite_ok=True)
    col = ('电影详情链接','图片链接','中文名','外国名','评分','评分数','简介','概况')
    for i in range(0,8):
        sheet.write(0,i,col[i])
    for i in range(0,250):
        print('第%d条'%i)
        data = datalist[i]
        for j in range(0,8):
            sheet.write(i+1,j,data[j])


    book.save(savepath)


if __name__ == '__main__':
    main()